 /*主体*/ 
 .lt-main {
    height: 100%;
    // background-color: pink;
    position: relative;
    /*导航*/ 
    .lt-nav {
        padding: 10px;
        li {
            float: left;
            width: 33.33%;
            a {
                float: left;
                width: 100%;
                img {
                    width: 100%;
                    display: block;
                }
            }
        }
    }
    /*产品*/ 

    .lt-product {
        padding: 0 10px;
        li {
            width: 49%;
            height: 310px;
            border: 1px solid #000;
            text-align: center;
            padding: 10px;
            margin-bottom: 10px;
            img {
                width: 160px;
                height: 130px;
            }
            p {
                font-size: 16px;
                height: 40px;
            }
            .new {
                color: red;
            }
            .old {
                text-decoration: line-through;
            }
        }
        li:nth-child(n+1) {
           float: left;
        }
        li:nth-child(2n) {
            float: right;
        }
    }
 
}